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There are several balls of fluff seen via webcam that are delighting birdwatchers.

You can watch as three Peregrine Falcon chicks that hatched in the nesting box in downtown Seattle grow up.

[WATCH LIVE FALCON CAM STREAM]

The Falcon Research Group says falcons first nested in downtown Seattle in 1994 on the Washington Mutual Tower. A nest box was provided by the FRC in cooperation with the building managers, Wright-Runstad.

Virginia laid her first egg around April 26 and the first eyasse hatched on May 6. It takes about six weeks for the young falcons to develop, and they're expected to fledge, or first fly, in mid-July.

Peregrine falcons have excellent vision and razor-sharp talons. They can dive at speeds exceeding 200 miles per hour to capture flying prey, primarily starlings and pigeons in urban areas. The birds apparently like downtown settings because of the abundant food supply and the high rocky cliffs of skyscrapers.

Seattle's first peregrine falcon was spotted near the Ballard Bridge in 1986. Since then, several birds have wintered in the city. But until Stewart and Virginia, none of the peregrines had stayed in Seattle to breed.

The nest box is located on a ledge high on the east side of the building (56th floor), and can be viewed from several adjacent buildings in the downtown area.

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